Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Initialization

INITIALIZATION

NOTICE:

• The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed or replaced during headlight ECU sub-assembly LH removal/installation are shown below.

  Replaced Part or Performed Procedure	Necessary Procedures	Proceed to
  Headlight ECU sub-assembly LH or headlight assembly LH	Synchronize the vehicle information	SYNCHRONIZE VEHICLE INFORMATION
  Battery terminal is disconnected and connected.	Steering sensor zero point calibration

• If the steering sensor zero point calibration is not performed, the cornering lights may not operate correctly.
• A new headlight ECU sub-assembly LH cannot operate until the vehicle information is registered.
• Even if the headlight ECU sub-assembly RH is replaced with a new one, it is not necessary to synchronize the vehicle information.
• The lighting system (for Gasoline Model with Cornering Light) uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure.

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SYNCHRONIZE VEHICLE INFORMATION (When using the TECHSTREAM)

NOTICE:

If synchronization fails, make sure to turn the engine switch off then back on (IG) before performing synchronization again.

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG).

(d) Check that the "Headlight Auto Leveling System Unavailable Visit Your Dealer" warning message is displayed on the multi-information display.

(e) Enter the following menus: Body Electrical / HL AutoLeveling / Utility / ECU Information Sync.

(f) Check the display on the Techstream and press "Next".

(g) Check that the "Headlight System Malfunction Visit Your Dealer" warning message continuously blinks 6 times at 2 Hz on the multi-information display.

HINT:

If the "Headlight System Malfunction Visit Your Dealer" warning message does not start blinking on the multi-information display after perform the procedure again.

(h) Press "Exit".

(i) Turn the engine switch off.

NOTICE:

If synchronization fails, make sure to turn the engine switch off then back on (IG) before performing synchronization again.

SYNCHRONIZE VEHICLE INFORMATION (When not using the TECHSTREAM)

(a) Turn the engine switch on (IG).

(b) Check that the "Headlight Auto Leveling System Unavailable Visit Your Dealer" warning message is displayed on the multi-information display.

(c) Using the headlight dimmer switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the engine switch on (IG).

NOTICE:

If the low beam headlights illuminate when the engine switch is on (IG), shine a light on the automatic light control sensor to turn the low beam headlights off before operating the headlight dimmer switch.

HINT:

If this step cannot be completed within 20 seconds, turn the engine switch off. Then, turn the engine switch on (IG) and restart the procedure.

(d) Check that the "Headlight System Malfunction Visit Your Dealer" warning message continuously blinks 6 times at 2 Hz on the multi-information display.

HINT:

If the "Headlight System Malfunction Visit Your Dealer" warning message does not start blinking on the multi-information display after perform the procedure again.

(e) Turn the engine switch off.